S
M
T
W
T
F
S
30
78°
56°
31
77°
56°
1
76°
57°
2
77°
60°
3
76°
57°
4
77°
56°
5
77°
54°
6
76°
55°
7
75°
52°
8
76°
53°
9
75°
60°
10
75°
53°
11
74°
52°
12
74°
52°
13
75°
55°
14
77°
56°
15
78°
57°
16
79°
58°
17
80°
58°
18
79°
56°
19
78°
56°
20
77°
49°
21
70°
52°
22
70°
55°
23
74°
55°
24
75°
56°
25
76°
52°
26
75°
46°
27
70°
47°
28
67°
46°
29
66°
47°
30
65°
47°
1
65°
51°
2
Hist. Avg.
69°
50°
3
Hist. Avg.
68°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Oakmont
Oakmont's September 2026 forecast shows daily high temperatures ranging from 65° to 80°, with overnight lows between 46° and 60°. The average high for September is 75° with an average low of 54°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in Oakmont. See also: October | November | December.
